U-Line Freezer (L) (R) Temp Lo 6H+: Zone Running Too Cold
(L) (R) Temp Lo 6H+ appears when a zone in your U-Line freezer is holding roughly ten degrees F beneath its target, and has done so past the 6 hour mark.
What does U-Line freezer code (L) (R) Temp Lo 6H+ mean?
(L) (R) Temp Lo 6H+ is an overcooling alert for a zone in a U-Line freezer. The L or R on the display shows which side. The control has recorded a reading roughly ten degrees F beneath the set point for over 6 hours. In a freezer, being colder than the set point seldom spoils food, but it wastes energy and can freeze items that should not be frozen, such as beverages. The simplest cause is a changed set point. A sensor that misreads or a damper that keeps cold air flowing can also be behind it.
(L) (R) Temp Lo 6H+ at a glance
- Code
- (L) (R) Temp Lo 6H+
- Appliance
- U-Line freezer
- Applies to
- U-Line freezers with independent left and right zone settings
- Type
- Low urgency
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- A set point that has been lowered
What you may notice with (L) (R) Temp Lo 6H+
- (L) (R) Temp Lo 6H+ appears for one side
- Frost builds quickly on the named side
- Drinks or soft items freeze solid
- The freezer runs more than expected
How the freezer detects (L) (R) Temp Lo 6H+
The control in a zoned U-Line freezer watches each zone's thermistor and compares it with the set point. When the zone is cold enough, it turns the cooling off and waits. The temperature then rises slowly until cooling starts again, and that cycle keeps the zone near its target.
If the reading stays roughly ten degrees F under the target across more than 6 hours, the cycle is not working as designed. A sensor that reads too cold could keep cooling running, and a damper stuck open could keep sending cold air. The control shows (L) (R) Temp Lo 6H+ to tell you the named side is being held colder than you asked for.
Likely causes of (L) (R) Temp Lo 6H+
- A set point that has been lowered
- A thermistor reading colder than the real temperature
- A damper that stays open and sends too much cold air
- A control that keeps cooling after the zone has reached its target
Can you keep using the freezer with (L) (R) Temp Lo 6H+?
Yes, you can keep using the freezer, because overcooling is not a hazard to people or to frozen food. Keep drinks, sauces and other items that should not freeze away from the named side. Check the set point on the display. If the message remains after the set point is right, ask a technician to look at the sensor and damper so the unit does not waste energy.
What you can safely check
- Close the door, and shut off power to the freezer before you move shelves or look at vents.
- Read which side the display names.
- Check that side's set point and compare it with what you want.
- Look for frost growth near the vents.
- Restore power and watch the display. If (L) (R) Temp Lo 6H+ returns after the set point is correct, call us.
What our technician does for (L) (R) Temp Lo 6H+
- Verify the set point stored in the control
- Test the zone thermistor against a measured temperature
- Check the damper movement on the named side
- Review the control's cooling output
How to keep (L) (R) Temp Lo 6H+ from coming back
- Check the zone set points after cleaning near the display
- Keep bottles and cans out of the freezer unless you plan to freeze them
- Clear frost from the door seal so it does not trap the door open and force longer cooling
Technical reference
- Code
- (L) (R) Temp Lo 6H+
- Appliance
- U-Line freezer
- Control family
- U-Line freezers with independent left and right zone settings
- Maker documentation
- U-Line owner manuals and support
- Checked
- November 2026
Code meanings come from the maker’s documentation and our own repair work; we do not reprint the maker’s document. Confirm the full model number before acting on a code. We are an independent repair company, not affiliated with U-Line Corporation.
Related U-Line freezer error codes
(L) (R) Temp Lo 6H+ questions
Should I worry about (L) (R) Temp Lo 6H+?
Not for safety. A very cold freezer holds food well, but it uses extra energy and may over-freeze items such as drinks. Look at the set point first.
Can this message appear after I change the temperature?
Yes. If you lowered the set point, the zone may sit far below the old one. The control compares against the current set point, so check that the value matches your intention.
Does the named side matter?
Yes. The L or R tells you which zone is overcooling, so the other side may be normal. Focus on the side shown.
Is (L) (R) Temp Lo 6H+ the opposite of Temp Hi 6H+?
Yes, with the same timing. Lo means the zone is roughly ten degrees F colder than its set point across more than 6 hours, while Hi means it is that much warmer.
Will it correct itself if I raise the set point?
Possibly. If the lower setting was the cause, the zone warms toward the new target and the message clears. If a sensor or damper is responsible, the message returns.
Need help with (L) (R) Temp Lo 6H+?
A technician finds the cause at your bar or lanai and puts the price in writing before any part comes out.